Postcode record · Enfield
N21 3SL.
N21 3SL has 9 known premises and 4 planning records — 2 approved of 4 decided (50%). 4 EPC records.
Postcode N21 3SL · boundary not held, centred on the postcodeApprovedRefusedOther4 exact4 on the map — every match
At a glance · this postcodeEnfield profile →
9
Premises
known addresses (UPRNs)
4
Applications
4 decided
50%
Approval rate
2 approved · 2 refused
4
EPC records
ratings D 4
4
Mapped applications
inside the postcode shape
Postcode unit boundary from Ordnance Survey; premises and applications inside it. Aggregates describe the area, not any single premises.
Property
What is it?
N21 3SL has 9 known premises and 4 planning records — 2 approved of 4 decided (50%). 4 EPC records.
Premises
Name
Details
UPRN 207006065
UPRN 207083645
UPRN 207083646
UPRN 207083647
UPRN 207083648
UPRN 207083649
UPRN 207083650
UPRN 207083651
UPRN 207084130
UPRN 207006065
UPRN 207083645
UPRN 207083646
Show all 9 rows
UPRN 207083647
UPRN 207083648
UPRN 207083649
UPRN 207083650
UPRN 207083651
UPRN 207084130
Planning
What happened?
4 planning applications across the postcode; 2 approved of 4 decided (50%). Latest 4 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Single storey front/side extension (with rear bay projection), garage conversion and single storey side extension.
1 Hazelgreen Close London N21 3SL · premises record
Applicant Mr and Mrs Derek and Camilla Gannon · Agent Michael Trogal Chartered Architect · Officer Ronny Ferley
Householder
Approved
2021-06-21
Single storey front/side extension (with rear bay projection), garage conversion and single storey side extension.
1 Hazelgreen Close London N21 3SL · premises record
Applicant Mr and Mrs Derek and Camilla Gannon · Agent Michael Trogal Chartered Architect · Officer Ronny Ferley
Householder
Refused
2021-02-24
Single storey side extension to provide granny annexe.
7, Hazelgreen Close, London, N21 3SL · premises record
Applicant Mrs H Shafran · Agent Mr K. K.S.E. Building Services
Full
Approved
2003-06-17
Single storey side extension to provide granny annexe.
7, Hazelgreen Close, London, N21 3SL · premises record
Applicant Mrs H Shafran · Agent K.S.E. Building Services
Full
Refused
2003-03-24
Single storey front/side extension (with rear bay projection), garage conversion and single storey side extension.
1 Hazelgreen Close London N21 3SL · premises record
Applicant Mr and Mrs Derek and Camilla Gannon · Agent Michael Trogal Chartered Architect · Officer Ronny Ferley
Approved
2021-06-21
More
Householder
Single storey front/side extension (with rear bay projection), garage conversion and single storey side extension.
1 Hazelgreen Close London N21 3SL · premises record
Applicant Mr and Mrs Derek and Camilla Gannon · Agent Michael Trogal Chartered Architect · Officer Ronny Ferley
Refused
2021-02-24
More
Householder
Single storey side extension to provide granny annexe.
7, Hazelgreen Close, London, N21 3SL · premises record
Applicant Mrs H Shafran · Agent Mr K. K.S.E. Building Services
Approved
2003-06-17
More
Full
Show all 4 rows
Single storey side extension to provide granny annexe.
7, Hazelgreen Close, London, N21 3SL · premises record
Applicant Mrs H Shafran · Agent K.S.E. Building Services
Refused
2003-03-24
More
Full
Building control
Building-control records are not yet collected for Enfield — the register is being gathered borough by borough (held so far: Lambeth, Brent, Ealing, Westminster, City and others).
Place
What affects it?
Every mapped designation touching a premises in this postcode, with how many of its 9 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Borough wide · reference AD17 · covers 9 of 9 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Borough wide · reference AD17 · covers 9 of 9 premises. Some normally permitted changes may require planning permission.
Nearby postcodes and streets
Walk to the next area — linked where the Atlas has a record for it (pilot borough only for now).
People
Who is involved?
Named on the latest 4 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Applicant on 2 applications
Applicant on 2 applications
Agent on 2 applications
Agent on 1 application
Agent on 1 application
Case officer on 2 applications
Applicant on 2 applications
Applicant on 2 applications
Agent on 2 applications
Show all 6 rows
Agent on 1 application
Agent on 1 application
Case officer on 2 applications
Development
What could it become?
Planning precedent4 applications and 4 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy4 EPC records; ratings D: 4.
What is not assertedNo capacity, value or ownership claim is made at area level; those belong to individual premises records and their evidence.
Intent signals
Planning Atlas ProOwnership, finance and market signals recorded at addresses in this postcode — each with date and source. Signals are evidence of change, not a prediction.
Thinking about a project here?
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.